Workshop on Transboundary Water
Management: Orange Senqu and Zambezi
Basins.
Johannesburg. 29th and 30th April 2014.
Trans...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
1. Basin Area : 1
...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Orange-Senqu sourc...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Degradation of hig...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
09-Jun-14
Dry rive...
Confluence of Vaal and Orange-Senqu
Rivers
09-Jun-14
The River Mouth along the border between Namibia and South
Africa has been declared a Ramsar Site on both sides ...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Sasol Petrochemica...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Commercial Irrigat...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Thank YouThank You...
Basin Challenges
Basin Challenges – Water Stress
ClimateClimateClimateClimate –––– temperature changetemperature changetemperature changetemperature change
14
By 2050
ClimateClimateClimateClimate –––– precipitation changeprecipitation changeprecipitation changeprecipitation change
15
By 2...
Changes in AgricultureChanges in AgricultureChanges in AgricultureChanges in Agriculture
16
TRANSBOUNDARY WATER
COOPERATION IN THE ORANGE SENQU
RIVER BASIN
1975
2000
Botswana
Lesotho
Namibia
South Africa
Joint Permanent
Technical
Committee
1983
Joint Permanent
Technical Commiss...
The Orange-Senqu River Commission
(Est. 2000)
ORASECOM Institutional Structure
Task Teams: technical, legal, communications, finance, hydrogeology.
Institutional
establishment
Situation
Assessment
Specific
Studies
Future
Development
Scenarios
Management
Response
Options...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Lesotho Highlands ...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
(Katse dam: Centra...
Katse Tunnel (85km @ 4.5m Diameter)Katse Tunnel (85km @ 4.5m Diameter)
DWAF (May 2006)
RUSTENBURG
25
Bloemhof Dam
Vaal Dam
Vaal
Barrage
Proposed
Polihali
Dam
Katse
Mohale
Orange River System
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Irrigation Efficiency RSA/Namibia (water conservation,
stakeholder participation, climate change)
• Noordoever-Vioolsdrift...
Emfuleni Water Conservation Project
(PPP, Demand Management, Climate Adaptation, Stakeholder
Participation)
Reflections
• In the Orange Senqu basin where options for new infrastructure
are limited focus on optimising operation eff...
ORASECOM
BOTS
W
ANA LES
OTHO
NAM
I
BIA
SOUTH
A
FRICA
ORANGE
-
SENQU RIVER
CO
M
MISSION
Established 2000
Thank you.
www.ora...
Transboundary Water Cooperation in the Orange Senqu River Basin
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Transboundary Water Cooperation in the Orange Senqu River Basin

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Transboundary Water Management Workshop held in Johannesburg, South Africa from April 29-30, 2014.

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Transboundary Water Cooperation in the Orange Senqu River Basin

  1. 1. Workshop on Transboundary Water Management: Orange Senqu and Zambezi Basins. Johannesburg. 29th and 30th April 2014. Transboundary Water Cooperation in the Orange Senqu River Basin. by Lenka Thamae, Executive Secretary, Orange-Senqu River Commission (ORASECOM)
  2. 2. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 1. Basin Area : 1 million sq km. 2. Rainfall : 1800mm in Lesotho highlands to 45mm at River mouth. 3. Population: 19 million (Earle et al. 2004). 4. Average annual natural runoff : 12,000 mill. cub. metres (quote flood and drought flows as well) less than half of the flow reaches the river mouth on the Atlantic Ocean. 5. Basin States: Botswana, Lesotho, Namibia and South Africa. Basin StatisticsBasin StatisticsBasin StatisticsBasin Statistics
  3. 3. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 Orange-Senqu sources in highlands of Lesotho at around 3000 metres above mean sea level (alpine wetlands “sponges”) – very important for sustaining flows especially in dry season and during drought periods.
  4. 4. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 Degradation of highland wetlands due to inappropriate land management practices
  5. 5. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 09-Jun-14 Dry river bed on Molopo catchment - north west part of the Orange Senqu River Basin
  6. 6. Confluence of Vaal and Orange-Senqu Rivers
  7. 7. 09-Jun-14 The River Mouth along the border between Namibia and South Africa has been declared a Ramsar Site on both sides of the border.
  8. 8. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 Sasol Petrochemical Plant Secunda Produces >30% of SA’s Petrol/Diesel from coal
  9. 9. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 Commercial Irrigation and Hydropower generation are some of the main developments in the river basin. 09-Jun-14
  10. 10. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 Thank YouThank You Export grapes Aussenkehr Namibia
  11. 11. Basin Challenges
  12. 12. Basin Challenges – Water Stress
  13. 13. ClimateClimateClimateClimate –––– temperature changetemperature changetemperature changetemperature change 14 By 2050
  14. 14. ClimateClimateClimateClimate –––– precipitation changeprecipitation changeprecipitation changeprecipitation change 15 By 2050
  15. 15. Changes in AgricultureChanges in AgricultureChanges in AgricultureChanges in Agriculture 16
  16. 16. TRANSBOUNDARY WATER COOPERATION IN THE ORANGE SENQU RIVER BASIN
  17. 17. 1975 2000 Botswana Lesotho Namibia South Africa Joint Permanent Technical Committee 1983 Joint Permanent Technical Commission 1986 Joint Technical Commission 1987 Joint Permanent Water Committee 1990 Permanent Water Commission & Joint Irrigation Authority 1992 Lesotho Highlands Water Commission 1999 Joint Technical Committee 1978 History of Trans-boundary Cooperation in the Orange-Senqu Basin ( … LHWP Phase II and the Botswana, Lesotho, South Africa MOU)
  18. 18. The Orange-Senqu River Commission (Est. 2000)
  19. 19. ORASECOM Institutional Structure Task Teams: technical, legal, communications, finance, hydrogeology.
  20. 20. Institutional establishment Situation Assessment Specific Studies Future Development Scenarios Management Response Options Basin-level IWRM Plan Implementation Monitoring & Review Sub-basin Plans Institutional Common understanding Future scenarios Strategy formulation Implementation and Monitoring Delivery Schematic
  21. 21. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 Lesotho Highlands Phase 2 MAP 032Lesotho Highlands Phase 2 MAP 03237km 4.5mØ 40m3/s 46km 4.4mØ 5.6km 3.8mØ 32km 4.4mØ 33 m3/s 38km 5mØ 16 m3/s Mohale 145m h Katse 185m Polihali 164m
  22. 22. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 (Katse dam: Central collection point for transfer of water to South Africa (Gauteng).
  23. 23. Katse Tunnel (85km @ 4.5m Diameter)Katse Tunnel (85km @ 4.5m Diameter)
  24. 24. DWAF (May 2006) RUSTENBURG 25 Bloemhof Dam Vaal Dam Vaal Barrage Proposed Polihali Dam Katse Mohale Orange River System
  25. 25. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000
  26. 26. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000
  27. 27. Irrigation Efficiency RSA/Namibia (water conservation, stakeholder participation, climate change) • Noordoever-Vioolsdrift Joint Irrigation Authority, Namibia and South Africa • Water conservation and demand management, water quality issues • Survey: water requirements, crops, areas and irrigation systems • Field tests of irrigation efficiency • Technical training workshops with farmers • Review of applicable best practices • Installation of equipment (soil moisture probes, meteorology station, flow meters) • On line display of quasi real time data • Drafting of Water Management Plan with JIA.
  28. 28. Emfuleni Water Conservation Project (PPP, Demand Management, Climate Adaptation, Stakeholder Participation)
  29. 29. Reflections • In the Orange Senqu basin where options for new infrastructure are limited focus on optimising operation efficiency including joint operation of infrastructure and WC/DM are key. • RBOs need to build and maintain robust operational and monitoring systems (governance and field level) to maintain complementary function to individual State structures. • Exploring innovative partnerships and continuing to leverage funding for priority programmatic areas remains an ongoing effort. • Given the uncertainty faced as result of growing demand and climate change, alignment of planning time horizons by states sharing a transboundary river is critical and underpins joint action at basin level.
  30. 30. ORASECOM BOTS W ANA LES OTHO NAM I BIA SOUTH A FRICA ORANGE - SENQU RIVER CO M MISSION Established 2000 Thank you. www.orasecom.org Thank you. www.orasecom.org

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